| 摘要 |
A footprint-providing device which can put footprints on Web pages provided by various Web servers. The footprint-providing device is connected via a network to a client terminal that views a Web page with a browser. The footprint-providing device sends footprint data, which can be written on one part of the Web page that has been received by the browser of client terminal, to the browser receiving the Web page from a Web server as a response to a request that is made asynchronously with a view-request for the Web page by the browser.
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